Journal
OPTICS EXPRESS
Volume 16, Issue 18, Pages 14106-14114Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.16.014106
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We present the first report of two-photon induced plastic surface deformation in solid polymer films. Exposure of azo polymer films, which absorb in the visible range (lambda(max) = 480 nm), to intense 920 nm irradiation leads to polarization dependent photofluidic polymer nanomovement caused by photoselective two-photon trans <-> cis isomerization. The deformations were induced by a gradient of light intensity; and strongly depend on the wavelength and the polarization direction of the incident laser light and the position of the focused spot with respect to the plane of the polymer film. (C) 2008 Optical Society of America.
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